CN210806712U

CN210806712U - Cable joint

Info

Publication number: CN210806712U
Application number: CN201922232382.1U
Authority: CN
Inventors: 孙德旭; 王鹏; 罗杨; 孙金峰; 郭慧; 张凯; 王鹏飞; 谭云贤
Original assignee: China Petroleum and Chemical Corp; Sinopec Research Institute of Petroleum Engineering Shengli Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Research Institute of Petroleum Engineering Shengli Co
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-06-19
Anticipated expiration: 2029-12-13

Abstract

The utility model relates to a cable joint, which comprises an eccentric pipe, wherein two ends of the eccentric pipe are respectively and fixedly connected with an oil pipe, and the side surface of the eccentric pipe is provided with a U-shaped notch; the sealing part is fixedly connected in the U-shaped notch, cables penetrate through two sides of the sealing part respectively, and cable cores of the cables are hinged inside the sealing part; wherein the sealing portion includes: the sealing short section is internally provided with a cavity, and two ends of the cavity are respectively provided with internal threads; the connector is internally provided with a through hole and is connected to two ends of the sealing short section through threads; the clamping sleeve is conical, one end of the clamping sleeve with the smaller diameter is clamped into the through hole, and the end of the clamping sleeve with the larger diameter is exposed outside the end face of the joint far away from the sealing short section; the pressure head is connected with the joint through threads; the utility model aims at solving the problem that the cable used by the current oil field well is easy to collide with and break when being connected, and has poor sealing performance and complex binding process.

Description

Cable joint

Technical Field

The utility model belongs to the technical field of oil field well cable junction, concretely relates to cable joint.

Background

The cable used for the oil field and water well is mainly used for transmission of underground signals, power supply of underground equipment and protection of an internal cable core, the end surface structure of the cable sequentially comprises the cable core, an insulating layer, a shielding layer and a steel pipe layer from inside to outside, and in the field practical application process, the cable needs to be butted again under the influences of the size and length limitation of the cable, the collision, breaking and separation and bending and pressing fracture.

At present, the cable connection mode is that two sections of cable cores are hinged, an adhesive tape is used for insulation sealing, and then the hinged cable is bound on an oil pipe body through an oil pipe clamp and is put into a well together with the oil pipe. The main problems of the connection mode are that: 1. in the process of lowering the cable into the well, the oil pipe clamp is easy to collide with the sleeve, so that the clamp is broken and separated to disconnect the hinged cable; 2. the insulating adhesive tape is adopted outside the cable core, and once water drops penetrate into the adhesive tape, a signal short circuit is caused, so that the good waterproof and air-isolating effects cannot be achieved, and potential safety hazards are left for later work; 3. the binding process of the oil pipe clamp is complex, and the assembly and disassembly operations are inconvenient.

Disclosure of Invention

The utility model provides a cable joint, the purpose is solved the cable that present oil field well used and is collided with easily when connecting, easily breaks off, and the leakproofness is poor and bind the complicated scheduling problem of process.

The utility model provides a cable joint, which comprises an eccentric pipe, wherein two ends of the eccentric pipe are respectively and fixedly connected with an oil pipe, and the side surface of the eccentric pipe is provided with a U-shaped notch; the sealing part is fixedly connected in the U-shaped notch, cables penetrate through the left side and the right side of the sealing part respectively, and cable cores of the two cables are hinged inside the sealing part; the anti-collision mechanisms are fixedly connected to two ends of the eccentric pipe; wherein the sealing portion includes: the sealing short section is internally provided with a cavity, and two ends of the cavity are respectively provided with internal threads; the connector is internally provided with a through hole, external threads are processed at two ends of the connector, and the connector is connected to two ends of the sealing short section through threads; the clamping sleeve is conical, one end of the clamping sleeve with the smaller diameter is clamped into the through hole, and the end of the clamping sleeve with the larger diameter is exposed outside the end face of the joint far away from the sealing short section; the pressure head is provided with an internal thread, the pressure head is connected with the joint through the thread, the inner end face of the pressure head is attached to the end face with the larger diameter of the clamping sleeve, and the end face of the pressure head is provided with a hole.

Preferably, the joint and the sealing short joint are connected through tapered fine threads.

Preferably, two cable core hinged parts positioned in the sealing short section on the two cables are sequentially bonded with an insulating tape and a thermoplastic sleeve from inside to outside at the outer side edges of the two cable cores.

Preferably, sealing silicone grease is filled between the inner wall of the inner cavity of the sealing short section and the thermoplastic sleeve.

Preferably, an arc-shaped groove is radially formed in the outer side of the eccentric pipe, a pressing sheet is installed in the arc-shaped groove, the pressing sheet presses the sealing short section in the U-shaped notch along the arc-shaped groove, a rivet is installed on the pressing sheet, and the pressing sheet is fixed in the arc-shaped groove through the rivet.

Preferably, joints A are arranged at the left end and the right end of the eccentric pipe, the outer side of each joint A is connected with an oil pipe through threads, the outer surface of the eccentric pipe is fixedly connected with an elastic piece, a convex block is arranged on the inner surface of the elastic piece, a groove is formed in the outer surface of the oil pipe, and the convex block is clamped into the groove.

Preferably, the anti-collision mechanisms comprise elastic rings which are fixedly connected to the outer surface of the eccentric pipe and are uniformly distributed; the anti-collision sleeve is arranged on the outer side of the elastic ring, an annular groove is formed in the inner side wall of the anti-collision sleeve, and the elastic ring is clamped into the annular groove.

The technical scheme provided by the application at least has the following technical effects:

1. the utility model adopts the structure that the device comprises an eccentric pipe, and the side surface of the eccentric pipe is provided with a U-shaped notch; the sealing part is fixedly connected to the U-shaped notch, cables penetrate into the left side and the right side of the sealing part respectively, the cable cores of the two cables are hinged to the inside of the sealing part, the hinged cables are placed in the sealing part, the sealing part is fixedly connected to the U-shaped notch on the side face of the eccentric pipe, the whole sealing part is contained in the U-shaped notch, and when the cables go into the well, the eccentric pipe can effectively prevent the sealing part from colliding with the sleeve pipe, so that the cables are prevented from being disconnected.

2. The utility model discloses a two cable core hinge parts that lie in sealed nipple joint on the cable, its outside limit from interior to bonding in proper order outward has insulating tape and thermoplastic cover, the inner chamber inner wall of sealed nipple joint with it has sealed silicone grease to fill between the thermoplastic cover. The technical scheme of the utility model, through pouring into sealed silicone grease into sealed nipple joint, utilize sealed silicone grease to displace the air in the sealed nipple joint, can make cable and air thoroughly keep apart to reduce trouble and potential safety hazard.

3. The utility model adopts that the sealing part comprises a sealing short section, a cavity is arranged in the sealing short section, and internal threads are respectively processed at the two ends of the cavity; the connector is internally provided with a through hole, external threads are processed at two ends of the connector, and the connector is connected to two ends of the sealing short section through tapered fine-tooth threads; the clamping sleeve is conical, one end of the clamping sleeve with the smaller diameter is clamped into the through hole, and the end of the clamping sleeve with the larger diameter is exposed outside the end face of the joint far away from the sealing short section; the pressure head, it has the internal thread to process on it, the pressure head with the joint passes through threaded connection, the interior terminal surface of pressure head with the great terminal surface of cutting ferrule diameter is laminated mutually, set up porose "technical scheme on the terminal surface of pressure head, at the in-process of screwing up the pressure, the pressure head extrudees the cutting ferrule and makes the cutting ferrule produce the deformation, and the cutting ferrule after the deformation closely laminates with the cable outer wall, plays sealed effect to inside the effectual water inflow of preventing seals the nipple joint, avoid the cable short circuit to cause the damage, also can prevent simultaneously that sealed silicone grease from spilling over from sealing the nipple joint.

4. The utility model discloses a "the arc wall has radially been seted up in the outside of eccentric pipe," install the preforming in the arc wall, the preforming compresses tightly sealed nipple joint in U type breach along the arc wall, install the rivet on the preforming, the preforming passes through fix with rivet the technical scheme of "in the arc wall compresses tightly sealed nipple joint in U type breach through with the preforming along the outside arc wall of eccentric pipe to pass through fix with rivet in the arc wall with the preforming, can make the firm installation of sealed nipple joint on the eccentric pipe, and bind convenient operation, the effectual working strength who reduces the installer.

5. The utility model adopts that the two ends of the eccentric pipe are fixedly connected with the anti-collision mechanisms which comprise elastic rings, and the elastic rings are fixedly connected with the outer surface of the eccentric pipe and are arranged in a uniform distribution manner; the anticollision cover, install in the outside of elastic ring, the ring channel has been seted up on the inside wall of anticollision cover, the technical scheme of "in the ring channel is gone into to the elastic ring card, through registrates the anticollision cover in the elastic ring outside, the elastic ring has elasticity, can support the anticollision cover to make the anticollision cover have the guard action to the eccentric pipe, avoid the eccentric pipe because cause the damage of colliding with.

6. The utility model discloses a "both ends all are provided with and connect A about the eccentric pipe, there is oil pipe in the outside that connects A through threaded connection, the external fixed surface of eccentric pipe is connected with the shell fragment, the internal surface of shell fragment is provided with the lug, oil pipe's surface is provided with the recess, the lug card is gone into the technical scheme of recess inside", through setting up shell fragment and lug, makes the lug card go into the recess, can make oil pipe and eccentric pipe cooperation fasten more to prevent to produce the not hard up problem of connection that the pulling force leads to because oil pipe weight is too big to the eccentric pipe.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view taken along line C-C of FIG. 1;

FIG. 3 is an axial cross-sectional view of the seal portion;

FIG. 4 is an enlarged view of portion A of FIG. 1;

fig. 5 is a sectional view taken along line B-B in fig. 1.

In the figure, 1, an eccentric pipe; 2. a sealing part; 3. a cable; 4. a U-shaped notch; 5. sealing the short section; 6. a joint; 7. a pressure head; 8. a card sleeve; 9. a through hole; 10. an arc-shaped slot; 11. an insulating tape; 12. hot-molding the sleeve; 13. sealing the silicone grease; 14. tabletting; 15. riveting; 16. an oil pipe; 17. an anti-collision mechanism; 18. an elastic ring; 19. an anti-collision sleeve; 20. an annular groove; 22. a joint A; 23. a spring plate; 24. a bump; 26. and (4) a groove.

Detailed Description

The embodiment of the utility model provides a cable joint, the cable that the purpose was used to solve present oil field well exists when connecting easily collide with, easily break, and the leakproofness is poor and bind the complicated scheduling problem of process.

Through placing the cable 3 with the hinge in sealing portion 2, with sealing portion 2 fixed connection in the U type breach 4 of 1 side of eccentric pipe, make 2 holding of whole sealing portion in U type breach 4, when the cable in the in-process of going into the well, eccentric pipe 1 can effectually prevent sealing portion 2 and sleeve pipe bump to avoid the cable disconnection.

By injecting the sealing silicone grease 13 into the sealing short section 5 and displacing the air in the sealing short section 5 by using the sealing silicone grease 13, the cable 3 can be thoroughly isolated from the air, thereby reducing faults and potential safety hazards.

Compress tightly cutting ferrule 8 through the setting, make pressure head 7 at the in-process of screwing up, pressure head 7 extrudees cutting ferrule 8 and makes cutting ferrule 8 produce the deformation, and cutting ferrule 8 after the deformation closely laminates with 3 outer walls of cable, plays sealed effect to 3 short circuits of cable are avoided causing the damage to effectual preventing rivers income sealed nipple joint 5 inside, also can prevent simultaneously that sealed silicone grease from spilling over from sealed nipple joint.

In addition, through registrate the anticollision cover 19 in the elastic ring 18 outside, elastic ring 18 has elasticity, can support anticollision cover 19 to make anticollision cover 19 have the guard action to eccentric pipe 1, avoid eccentric pipe 1 because the damage that causes of colliding with.

For better understanding of the technical solutions of the present invention, the following technical solutions of the present invention are described in detail with reference to the accompanying drawings and embodiments:

the embodiment of the utility model provides a cable joint, as shown in fig. 1 and 2, mainly comprises an eccentric pipe 1, wherein two ends of the eccentric pipe 1 are respectively connected with an oil pipe 16 by screw threads, and the side surface of the eccentric pipe 1 is provided with a U-shaped notch 4; the sealing part 2 is fixedly connected in the U-shaped notch 4, cables 3 are respectively penetrated into the left side and the right side of the sealing part 2, and cable cores of the two cables 3 are wound and hinged inside the sealing part 2;

specifically, as shown in fig. 3, the seal portion 2 includes: the sealing short section 5 is cylindrical, a cavity is formed in the sealing short section, and internal threads are respectively machined at two ends of the cavity; the connector 6 is internally provided with a through hole 9, external threads are processed at two ends of the connector, the connector 6 is connected to two ends of the sealing short section 5 through tapered fine-tooth threads, and the tapered fine-tooth threads can be NPT threads, so that the connection sealing performance is better; the cutting sleeve 8 is conical, one end of the cutting sleeve 8 with the smaller diameter is clamped into the through hole 9, and the end of the cutting sleeve 8 with the larger diameter is exposed outside the end face, far away from the sealing short section 5, of the joint 6; the pressure head 7, it is the circular baffle that has the cyclic annular boss for processing on the terminal surface, set up the through-hole that can make cable 3 pass on the terminal surface of pressure head 7, processing has the internal thread on the inner wall of cyclic annular boss, pressure head 7 with connect 6 and pass through threaded connection, the interior terminal surface of pressure head 7 with the great terminal surface of cutting ferrule 8 diameter is laminated mutually. The cables 3 at the two ends of the sealing part 2 can penetrate out of the through holes 9 formed in the joint 6, the clamping sleeve 8 and the through hole formed in the end face of the pressure head 7 and extend outwards.

Two cable core hinged parts positioned in the sealing short section 5 on the two cables 3 are sequentially wrapped and bonded with an insulating tape 11 and a thermoplastic sleeve 12 from inside to outside. And sealing silicone grease 13 is filled between the inner wall of the inner cavity of the sealing short section 5 and the thermoplastic sleeve 12. The outer side of the eccentric pipe 1 is radially provided with an arc-shaped groove 10, a pressing sheet 14 is arranged in the arc-shaped groove 10, the pressing sheet 14 presses the sealing short section 5 in the U-shaped notch 4 along the arc-shaped groove 10, a rivet 15 is arranged on the pressing sheet 14, and the pressing sheet 14 is fixed in the arc-shaped groove 10 through the rivet 15.

Specifically, as shown in fig. 4, both ends all are provided with joint a22 about eccentric pipe 1, there is oil pipe 16 outside through threaded connection joint a22, the outer fixed surface of eccentric pipe 1 is connected with shell fragment 23, the internal surface of shell fragment 23 is provided with lug 24, the surface of oil pipe 16 is provided with recess 26, works as when oil pipe 16 screws up on joint a22, lug 24 is gone into inside recess 26.

Specifically, as shown in fig. 5, two ends of the eccentric pipe 1 are fixedly connected with anti-collision mechanisms 17, and each anti-collision mechanism 17 includes an elastic ring 18 which is annular and has elasticity. The elastic rings 18 are fixedly connected to the outer surface of the eccentric pipe 1 and are uniformly distributed around the center line of the eccentric pipe 1; the anti-collision sleeve 19 is sleeved on the outer side of the elastic ring 18, an annular groove 20 is formed in the inner side wall of the anti-collision sleeve 19, and the elastic ring 18 is clamped into the annular groove 20. The anti-collision sleeve 19 has a protection effect on the eccentric pipe 1, and can prevent the eccentric pipe 1 from being damaged due to collision.

When the cable is used, the cable cores of the two sections of cables 3 are twisted together and hinged, the outer side edge of the hinged part is wrapped and bonded with the insulating tape 11, and the outer side edge of the insulating tape 11 is wrapped and bonded with the thermoplastic sleeve 12. And (3) putting the hinged cable 3 into the sealing short section 5, and placing the hinged part in the middle of the sealing short section 5. A connector 6 is screwed to the end of the short seal 5, the cable 3 at that end passing out of the through-hole 9 and extending outwards. And injecting sealing silicone grease 13 into the sealing short section 5, so that the sealing silicone grease 13 is filled between the inner wall of the inner cavity of the sealing short section 5 and the thermoplastic sleeve 12. Another connector 6 is screwed to the other end of the short seal 5, and the cable 3 at that end is passed out of the through hole 9 of the connector 6 and extends outward. The outer ends of the through holes 9 of the two connectors 6 are respectively plugged into the clamping sleeve 8, so that the end with the smaller diameter in the clamping sleeve 8 is clamped into the through hole 9, and the end with the larger diameter is exposed out of the through hole 9. Two pressure heads 7 are respectively in threaded connection with the outer end of the connector 6, so that the cables 3 at two ends penetrate out of holes formed in the end faces of the pressure heads 7 and extend outwards, the pressure heads 7 are screwed, the pressure heads 7 can press the clamping sleeves 8 to enable the clamping sleeves 8 to deform along with the gradual screwing of the pressure heads 7, and the deformed clamping sleeves 8 are tightly attached to the outer walls of the cables 3 to play a role in sealing. The sealing short section 5 is arranged in the U-shaped notch 4, the pressing sheet 14 presses the sealing short section 5 in the U-shaped notch 4 along the arc-shaped groove 10 outside the eccentric pipe 1, and the pressing sheet 14 is fixed in the arc-shaped groove 10 through the rivet 15. The crash sleeve 19 is fitted over the elastic ring 18, so that the elastic ring 18 snaps into the annular groove 20.

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A cable joint, comprising,

the oil pipe (16) is fixedly connected to two ends of the eccentric pipe (1) respectively, and a U-shaped notch (4) is formed in the side face of the eccentric pipe (1);

the sealing part (2) is fixedly connected in the U-shaped notch (4), cables (3) are respectively penetrated into the left side and the right side of the sealing part (2), and cable cores of the two cables (3) are hinged in the sealing part (2);

the anti-collision mechanisms (17) are fixedly connected to the two ends of the eccentric pipe (1);

wherein the sealing portion (2) comprises:

the sealing short section (5) is internally provided with a cavity, and two ends of the cavity are respectively provided with internal threads;

the connector (6) is internally provided with a through hole (9), external threads are processed at two ends of the connector, and the connector (6) is connected to two ends of the sealing short section (5) through threads;

the clamping sleeve (8) is conical, one end of the clamping sleeve (8) with the smaller diameter is clamped into the through hole (9), and the end with the larger diameter is exposed outside the end face, far away from the sealing short section (5), of the joint (6);

the pressing head (7) is provided with an internal thread, the pressing head (7) is connected with the joint (6) through the thread, the inner end face of the pressing head (7) is attached to the end face with the larger diameter of the clamping sleeve (8), and the end face of the pressing head (7) is provided with a hole.

2. A cable joint according to claim 1, characterized in that the joint (6) is connected to the sealing nipple (5) by means of a tapered fine thread.

3. A cable joint according to claim 1, wherein the two cable cores of the two cables (3) located in the sealing nipple (5) are hinged and bonded with an insulating tape (11) and a thermoplastic sleeve (12) on the outer side in sequence from inside to outside.

4. A cable joint according to claim 3, wherein a sealing silicone grease (13) is filled between the inner wall of the inner cavity of the sealing nipple (5) and the thermoplastic sleeve (12).

5. The cable joint according to any one of claims 1 to 4, wherein an arc-shaped groove (10) is radially opened on the outer side of the eccentric pipe (1), a pressing sheet (14) is installed in the arc-shaped groove (10), the pressing sheet (14) presses the sealing short section (5) in the U-shaped notch (4) along the arc-shaped groove (10), a rivet (15) is installed on the pressing sheet (14), and the pressing sheet (14) is fixed in the arc-shaped groove (10) through the rivet (15).

6. The cable joint according to any one of claims 1 to 4, wherein joints A (22) are arranged at the left end and the right end of the eccentric pipe (1), an oil pipe (16) is connected to the outer side of each joint A (22) through a thread, an elastic sheet (23) is fixedly connected to the outer surface of the eccentric pipe (1), a convex block (24) is arranged on the inner surface of the elastic sheet (23), a groove (26) is arranged on the outer surface of the oil pipe (16), and the convex block (24) is clamped into the groove (26).

7. Cable joint according to any one of claims 1 to 4, characterized in that the anti-collision mechanism (17) comprises,

the elastic rings (18) are fixedly connected to the outer surface of the eccentric pipe (1) and are uniformly distributed;

anticollision cover (19), install in the outside of elastic ring (18), annular groove (20) have been seted up on the inside wall of anticollision cover (19), elastic ring (18) are gone into in going into annular groove (20).